Energy storage portable power source



FIG. 1 is a perspective view of an energy storage portable power source;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The design which is claimed is shown in solid lines in the drawings. The broken lines shown in the drawings depict portions of the energy storage portable power source, and form no part of the claimed design. 

CLAIM The ornamental design for an energy storage portable power source, as shown and described. 